Glad to hear this issue has been resolved! Thanks for the sharing.
However, due to a recent update in forum policy, the question author now is not able to accept their own answers.
So I have written a brief summary of the solution this issue. Please feel free to accept it as the answer, which would benefit others who also has similar issues in forum.
[Error adding Outlook.com email address to Outlook 2021]
Issue: Add outlook.com email address to Outlook 2021 application on my PC but I get the following error:
0X800704cf & Something went wrong and Outlook couldn't set up your account. Please try again. If the problem continues, contact your email administrator.
Solution:
I was able to resolve the issue by creating a new local Windows account. It seems my account's profile was corrupted. I've been slowly transferring the old account's settings to the new one. Everything seems to be working correctly.
I have had this issue a number of times in the past with Windows account profiles becoming corrupted, going all the way back to Windows NT 4. It's a very tedious affair having to recreate all your settings in a new profile.
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